FR2376420A1 - SYNTHETIC OPENING RADAR - Google Patents

SYNTHETIC OPENING RADAR

Info

Publication number
FR2376420A1
FR2376420A1 FR7800060A FR7800060A FR2376420A1 FR 2376420 A1 FR2376420 A1 FR 2376420A1 FR 7800060 A FR7800060 A FR 7800060A FR 7800060 A FR7800060 A FR 7800060A FR 2376420 A1 FR2376420 A1 FR 2376420A1
Authority
FR
France
Prior art keywords
radar
ground
synthetic opening
opening radar
synthetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7800060A
Other languages
French (fr)
Other versions
FR2376420B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raytheon Co
Original Assignee
Raytheon Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Raytheon Co filed Critical Raytheon Co
Publication of FR2376420A1 publication Critical patent/FR2376420A1/en
Application granted granted Critical
Publication of FR2376420B1 publication Critical patent/FR2376420B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/60—Velocity or trajectory determination systems; Sense-of-movement determination systems wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
    • G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
    • G01S13/904—SAR modes
    • G01S13/9041—Squint mode

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne un radar cartographique à ouverture synthétique. Il comporte des dispositifs qui calculent les déphasages Doppler des signaux d'écho provenant du sol et qui, en fonction des calculs, modifient la fréquence de répétition des impulsions de manière à éliminer les effets Doppler. L'invention s'applique notamment à l'observation du sol en temps réel.The invention relates to a synthetic aperture cartographic radar. It includes devices which calculate the Doppler phase shifts of echo signals from the ground and which, based on the calculations, modify the pulse repetition frequency so as to eliminate Doppler effects. The invention applies in particular to the observation of the ground in real time.

FR7800060A 1977-01-03 1978-01-03 SYNTHETIC OPENING RADAR Granted FR2376420A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/756,455 US4084158A (en) 1977-01-03 1977-01-03 Method of operating synthetic aperture radar

Publications (2)

Publication Number Publication Date
FR2376420A1 true FR2376420A1 (en) 1978-07-28
FR2376420B1 FR2376420B1 (en) 1984-03-23

Family

ID=25043566

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800060A Granted FR2376420A1 (en) 1977-01-03 1978-01-03 SYNTHETIC OPENING RADAR

Country Status (7)

Country Link
US (1) US4084158A (en)
JP (1) JPS5385192A (en)
CA (1) CA1083695A (en)
DE (1) DE2800074A1 (en)
FR (1) FR2376420A1 (en)
GB (1) GB1540950A (en)
IT (1) IT1103462B (en)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132989A (en) * 1977-10-18 1979-01-02 Nasa Azimuth correlator for real-time synthetic aperture radar image processing
US4268828A (en) * 1979-09-19 1981-05-19 Ford Aerospace & Communications Corporation Swept frequency radar system employing phaseless averaging
US5172118A (en) * 1980-12-29 1992-12-15 Raytheon Company All weather tactical strike system (AWISS) and method of operation
US4546355A (en) * 1982-06-17 1985-10-08 Grumman Aerospace Corporation Range/azimuth/elevation ship imaging for ordnance control
US4564839A (en) * 1982-09-14 1986-01-14 The United States Of America As Represented By The Secretary Of The Air Force Feature referenced error correction apparatus
US4771287A (en) * 1983-06-23 1988-09-13 Westinghouse Electric Corp. Method of correcting for errors in radar imaging
US4611208A (en) * 1983-10-04 1986-09-09 The United States Of America As Represented By The Secretary Of The Air Force Means for aligning elevation beam pattern along an isodop in synthetic aperture mapping radar
JPH0646405B2 (en) * 1984-09-07 1994-06-15 株式会社日立製作所 Synthetic aperture radar image reproduction processing method
US4617567A (en) * 1984-09-28 1986-10-14 The Boeing Company Automatic motion compensation for residual motion in a synthetic aperture radar system
US4706088A (en) * 1986-03-24 1987-11-10 United Technologies Corporation Synthetic aperture radar focusing
US4706089A (en) * 1986-03-24 1987-11-10 United Technologies Corporation Synthetic aperture radar focusing
US4724418A (en) * 1986-03-24 1988-02-09 United Technologies Corporation Synthetic aperture radar focusing
DE3712065C1 (en) * 1987-04-09 1988-09-22 Dornier System Gmbh Topographic mapping method
GB8714746D0 (en) * 1987-06-24 1987-07-29 Secr Defence Synthetic aperture radar
US4851848A (en) * 1988-02-01 1989-07-25 The United States Of America As Represented By The Secretary Of The Navy Frequency agile synthetic aperture radar
US5029307A (en) * 1988-03-30 1991-07-02 Director General, Agency Of Industrial Science And Technology Synthetic aperture radar apparatus
US5189424A (en) * 1991-09-19 1993-02-23 Environmental Research Institute Of Michigan Three dimensional interferometric synthetic aperture radar terrain mapping employing altitude measurement and second order correction
US5160931A (en) * 1991-09-19 1992-11-03 Environmental Research Institute Of Michigan Interferometric synthetic aperture detection of sparse non-surface objects
US5170171A (en) * 1991-09-19 1992-12-08 Environmental Research Institute Of Michigan Three dimensional interferometric synthetic aperture radar terrain mapping employing altitude measurement
US5424742A (en) * 1992-12-31 1995-06-13 Raytheon Company Synthetic aperture radar guidance system and method of operating same
US5430445A (en) * 1992-12-31 1995-07-04 Raytheon Company Synthetic aperture radar guidance system and method of operating same
US5442364A (en) * 1993-07-22 1995-08-15 The United States Of America As Represented By The Secretary Of The Navy Alignment and beam spreading for ground radial airborne radar
EP1625416B1 (en) * 2003-05-21 2011-07-13 Astrium Limited Improvements relating to an imaging apparatus and method
US8129684B2 (en) * 2005-03-22 2012-03-06 Coherent, Inc. Detection of hidden objects by terahertz heterodyne laser imaging
US20070257194A1 (en) * 2005-03-22 2007-11-08 Mueller Eric R Terahertz heterodyne tomographic imaging system
US7345279B2 (en) * 2005-09-20 2008-03-18 Coherent, Inc. Identification of hidden objects by terahertz heterodyne laser imaging
US7378658B2 (en) * 2005-09-20 2008-05-27 Coherent, Inc. Security portal with THz trans-receiver
US7277042B1 (en) * 2006-05-12 2007-10-02 Raytheon Company Compensation of flight path deviation for spotlight SAR
US8144051B2 (en) * 2008-09-05 2012-03-27 Raytheon Company Adaptive sidelobe blanking for motion compensation
US9176227B2 (en) * 2010-06-28 2015-11-03 Institute National D'optique Method and apparatus for compensating for a parameter change in a synthetic aperture imaging system
CN101943753B (en) * 2010-07-29 2012-06-13 西安空间无线电技术研究所 Method for measuring microwave radar beam central transverse velocity
US8559894B2 (en) * 2011-09-01 2013-10-15 Baron Services, Inc. Klystron transmitter
CN105403887B (en) * 2015-12-25 2017-07-28 西安电子工程研究所 Carried SAR real-time motion compensation method based on INS
US10613212B2 (en) 2017-08-14 2020-04-07 Oculii Corp. Systems and methods for doppler-enhanced radar tracking
US10564277B2 (en) 2018-01-30 2020-02-18 Oculii Corp. Systems and methods for interpolated virtual aperature radar tracking
US11047974B1 (en) 2019-12-13 2021-06-29 Oculii Corp. Systems and methods for virtual doppler and/or aperture enhancement
US11994578B2 (en) 2019-12-13 2024-05-28 Oculli Corp. Systems and methods for virtual doppler and/or aperture enhancement
US11041940B1 (en) 2019-12-20 2021-06-22 Oculii Corp. Systems and methods for phase-modulated radar detection
US11280879B2 (en) 2020-06-16 2022-03-22 Oculii Corp. System and method for radar interference mitigation
US11841420B2 (en) 2020-11-16 2023-12-12 Oculii Corp. System and method for radar-based localization and/or mapping
US11561299B1 (en) 2022-06-03 2023-01-24 Oculii Corp. System and method for multi-waveform radar tracking

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341847A (en) * 1966-05-24 1967-09-12 North American Aviation Inc Platform motion compensation of a coherent mti system
US3737900A (en) * 1967-09-25 1973-06-05 Rockwell International Corp Digital doppler processor
US3768096A (en) * 1968-09-30 1973-10-23 North American Rockwell Focusing control of synthetic aperture processing for sidelooking radar
FR2315703A1 (en) * 1975-06-24 1977-01-21 Thomson Csf SIDE VISION RADAR SYSTEM

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034370A (en) * 1972-08-23 1977-07-05 Westinghouse Electric Corporation Second order motion compensator for high resolution radar
US3787848A (en) * 1972-08-28 1974-01-22 Hughes Aircraft Co System for discriminating between high and low speed targets
US3987285A (en) * 1973-05-04 1976-10-19 Rca Corporation Digital matched filtering using a step transform process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341847A (en) * 1966-05-24 1967-09-12 North American Aviation Inc Platform motion compensation of a coherent mti system
US3737900A (en) * 1967-09-25 1973-06-05 Rockwell International Corp Digital doppler processor
US3768096A (en) * 1968-09-30 1973-10-23 North American Rockwell Focusing control of synthetic aperture processing for sidelooking radar
FR2315703A1 (en) * 1975-06-24 1977-01-21 Thomson Csf SIDE VISION RADAR SYSTEM

Also Published As

Publication number Publication date
GB1540950A (en) 1979-02-21
IT1103462B (en) 1985-10-14
IT7847507A0 (en) 1978-01-02
DE2800074A1 (en) 1978-08-17
JPS5385192A (en) 1978-07-27
US4084158A (en) 1978-04-11
DE2800074C2 (en) 1988-03-10
CA1083695A (en) 1980-08-12
FR2376420B1 (en) 1984-03-23
JPS6249590B2 (en) 1987-10-20

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